Frequently Asked Questions

Atrial Fibrilation

A: Atrial fibrillation is an alteration of the heart rhythm in which the heart area that normally controls the electrical activation (the "sinus node") is "overwhelmed" by the activity of other parts of the right atrium or left atrium (the atria are the upper chambers of the four chambers that make up the heart). As a result the electrical activity of the atria becomes completely chaotic and the heartbeat (pulse) becomes irregular.